Ants use more than a single trail. Depending on the species, they can follow pheromone-marked routes, recognize landmarks, use the sky as a compass and keep track of their own movement. These sources of information can work together to guide an ant between food and its nest.
Pheromone trails guide many species
Some ants lay chemical pheromones as they walk. Other workers can follow these trails, and traffic may strengthen a route between a food source and the nest. A trail is useful social information, but it is not a universal explanation for every ant’s return journey: species differ, and a chemical path can be altered or interrupted. [1]
Ants also use private navigation cues
Experiments show that ants can use visual landmarks and path integration. In path integration, an animal combines information about the direction and distance it has travelled to estimate where it is relative to home. Some species also use celestial cues, including the Sun’s position or patterns of polarized skylight. Ants may rely on remembered information even when a pheromone route is available. [2]
Different habitats favour different strategies
A desert ant crossing a relatively featureless surface faces a different navigation problem from a worker following a busy trail through vegetation. Research on desert ants has shown that they can use a homeward direction-and-distance estimate and olfactory landmarks near the nest. Other species combine learned visual cues with chemical guidance. There is no single “ant GPS” used by all species.
A flexible system, not a perfect map
Ant navigation is better understood as a set of cues that can complement or compensate for one another. The route an ant takes depends on its species, experience, surroundings and task. This is why disturbing a trail may confuse some workers while others can still find home using landmarks or internal direction-and-distance information.
Sources and evidence
- Proceedings of the Royal Society B — Ants Use Multiple Spatial Memories and Chemical Pointers to Navigate Their Nest ↗
Research on ants’ combined use of spatial memory, visual cues and chemical information.
- PubMed — Role of the Pheromone for Navigation in the Group Foraging Ant ↗
Experimental study of interactions between pheromone trails and home-vector navigation.
- Smells Like Home: Desert Ants Use Olfactory Landmarks ↗
Research showing desert ants can use odour landmarks while locating the nest entrance.
Sources consulted: 14 October 2026. Written with AI assistance and checked against the linked references; not independently reviewed by a subject specialist. Sources do not endorse this article. See our editorial policy.
Revision: Initial publication; the summary was checked against the linked ant-navigation research.